C#メモ 非同期main

～C# 7.0

using System;
using System.Threading.Tasks;

class Program
{
    static void Main(string[] args)
    {
        MainAsync().Wait();
    }

    private static async Task MainAsync()
    {
        await Task.Delay(2000);
        Console.WriteLine("Hello World!");
    }
}

C# 7.1～

using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        await Task.Delay(2000);
        Console.WriteLine("Hello World!");
    }

}